QR Codes API — CUB SOFTWARE Developer

Base URL

Base https://cubsoftware.site

Authentication

No API key required — this endpoint is publicly accessible.

Please include a descriptive User-Agent header identifying your app.

QR Codes

GET /api/qr Generators

A link to a QR image for any text.

Parameter	Type	Required	Description
text	string	required	What the QR code should contain. Max 900 characters.
size	integer	optional	Target pixel size. Rounded down to whole modules, so the image is never stretched. Default 300.
error	string	optional	Error-correction level: l, m, q or h. Higher survives more damage but holds less. Default m.
format	string	optional	json, png or svg. Defaults to JSON, except for a browser opening the URL directly, which gets the image.

Example Response

{
  "data_uri": "data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPHN2ZyB4bWxucz0iaHR0cDovL3d3dy53…",
  "error_correction": "M",
  "modules": 15,
  "note": "Generated by CUB SOFTWARE — no third-party service involved.",
  "png_url": "https://cubsoftware.site/api/qr.png?text=hello&size=300&error=m",
  "requested_size": 300,
  "size": 299,
  "svg": "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"299\" height=\"299\" class=…",
  "svg_url": "https://cubsoftware.site/api/qr.svg?text=hello&size=300&error=m",
  "text_length": 5,
  "version": "M3-M"
}

curl 'https://cubsoftware.site/api/qr?text=hello'
const res  = await fetch('https://cubsoftware.site/api/qr?text=hello');
const data = await res.json();
console.log(data.png_url, data.svg_url);
const https = require('https');

https.get('https://cubsoftware.site/api/qr?text=hello', (res) => {
    let body = '';
    res.on('data', chunk => body += chunk);
    res.on('end', () => {
        const data = JSON.parse(body);
        console.log(data.png_url, data.svg_url);
    });
});
import requests

res  = requests.get('https://cubsoftware.site/api/qr?text=hello')
data = res.json()
print(data['png_url'], data['svg_url'])
<?php
$res  = file_get_contents('https://cubsoftware.site/api/qr?text=hello');
$data = json_decode($res, true);
echo $data['png_url'], $data['svg_url'];
package main

import (
    "encoding/json"
    "fmt"
    "io"
    "net/http"
)

func main() {
    resp, _ := http.Get("https://cubsoftware.site/api/qr?text=hello")
    defer resp.Body.Close()
    body, _ := io.ReadAll(resp.Body)
    var data map[string]any
    json.Unmarshal(body, &data)
    fmt.Println(data["png_url"], data["svg_url"])
}
using System.Net.Http.Json;

var client = new HttpClient();
var data   = await client.GetFromJsonAsync<Dictionary<string, object>>(
    "https://cubsoftware.site/api/qr?text=hello"
);
Console.WriteLine(data["png_url"]);
Console.WriteLine(data["svg_url"]);
import java.net.URI;
import java.net.http.*;
import java.util.Map;
import com.fasterxml.jackson.databind.ObjectMapper;

var client = HttpClient.newHttpClient();
var req    = HttpRequest.newBuilder()
    .uri(URI.create("https://cubsoftware.site/api/qr?text=hello"))
    .build();
var res  = client.send(req, HttpResponse.BodyHandlers.ofString());
var data = new ObjectMapper().readValue(res.body(), Map.class);
System.out.println(data.get("png_url"));
System.out.println(data.get("svg_url"));
require 'net/http'
require 'json'

uri  = URI('https://cubsoftware.site/api/qr?text=hello')
data = JSON.parse(Net::HTTP.get(uri))
puts data['png_url'], data['svg_url']

GET /api/qr.png Also available

The QR code itself, as a PNG image. Takes the same parameters.

curl 'https://cubsoftware.site/api/qr.png?text=hello&size=300'

GET /api/qr.svg Also available

The QR code itself, as SVG — sharp at any size. Takes the same parameters.

curl 'https://cubsoftware.site/api/qr.svg?text=hello&size=300'

Try It

Live request

Edit the path and send it. This runs against the real endpoint.

Press Send to run the request.

Rate Limits

10 requests per second per IP, across every endpoint.

Going over returns 429 — back off and retry.

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